Laser diode-pumped compact hybrid lithium niobate microring laser

作者：Zhou, Junxia; Huang, Ting; Fang, Zhiwei; Wu, Rongbo; Zhou, Yuan; Liu, Jian; Zhang, Haisu; Wang, Zhenhua; Wang, Min; Cheng, Ya^*

来源：Optics Letters, 2022, 47(21): 5599-5601.

DOI：10.1364/OL.474906

We demonstrate a compact hybrid lithium niobate micror-ing laser by butt coupling a commercial 980-nm pump laser diode chip with a high-quality Er3+-doped lithium niobate microring chip. Single-mode lasing emission at 1531-nm wavelength from the Er3+-doped lithium niobate microring can be observed with the integrated 980-nm laser pumping. The compact hybrid lithium niobate microring laser occu-pies the chip size of 3 mm x 4 mm x 0.5 mm. The threshold pumping laser power is 6 mW and the threshold current is 0.5 A (operating voltage 1.64 V) at atmospheric tempera-ture. The spectrum featuring single-mode lasing with small linewidth of 0.05 nm is observed. This work explores a robust hybrid lithium niobate microring laser source which has potential applications in coherent optical communication and precision metrology.

• 单位
  中国科学院研究生院; y